Home / 90,759.28-125,013.18-63,487.12

Finding the Fourth Proportional to 90,759.28, 125,013.18 and 63,487.12

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Solution

The fourth proportional to 90,759.28, 125,013.18 and 63,487.12 is: 87,448.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,759.28 : 125,013.18 = 63,487.12 : x
  2. Step 2: Convert to fraction form
    90,759.28/125,013.18 = 63,487.12/x
  3. Step 3: Cross multiply
    90,759.28x = 125,013.18 × 63,487.12
  4. Step 4: Simplify right side
    90,759.28x = 7,936,726,760.24
  5. Step 5: Solve for x
    x = 7,936,726,760.24/90,759.28
  6. Step 6: Final answer
    x = 87,448.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.